Shoe upper



FIG. 1 is a front perspective view of a shoe upper showing my new design;

FIG. 2 is a side view thereof;

FIG. 3 is a second side view thereof; and,

FIG. 4 is a top view thereof.

The broken line immediately surrounding the shaded area represents an unclaimed perimeter boundary of the design. The broken lines showing the remainder of the shoe are for environmental purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a shoe upper, as shown and described. 